Split rack connecting structure

Abstract

This utility model discloses a split-frame connection structure, including at least two interconnected split frames, namely a first split frame and a second split frame. The first split frame has a convex arc-shaped component and at least one threaded hole fixedly attached to its connecting end. The second split frame has a concave arc-shaped component and at least one waist-shaped hole fixedly attached to its connecting end. The convex arc-shaped component and the concave arc-shaped component have the same radius of curvature, and they interlock to form an angle-adaptive contact surface. The structure also includes an adjusting support device for adjusting the height of the split frames, respectively disposed at the bottom of the first and second split frames. The waist-shaped hole extends vertically, and its center is locked to the threaded hole via a connector. This split-frame connection structure ensures connection rigidity while providing structural flexibility and adjustability, significantly simplifying the horizontal adjustment process; it allows for fine-tuning of the connection surface angle, facilitating subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical structures, specifically a split frame connection structure, especially the connection between frames of large equipment on a production line. Background Technology

[0002] Large equipment, due to length limitations, is typically designed and installed in separate units, especially the support frame. Because of length and manufacturing constraints, it's difficult to ensure the perpendicularity of the connecting and supporting surfaces of these separate frames. The two frames are connected via planar contact, and installation must ensure the connecting surfaces are absolutely perpendicular. However, actual manufacturing errors can cause the two frames to tilt after locking, requiring repeated disassembly and reassembly for leveling, resulting in low efficiency. Figure 1 The diagram shown is a schematic diagram of the planar connection of two split frames in the prior art.

[0003] After the split frame is leveled, it is usually fixed with positioning pins. However, the positioning pin holes need to be precisely machined in advance. Machining errors (flatness, perpendicularity) on the connecting surfaces of the split frame will cause the pin hole axes on the two frames to be offset. Forcibly driving in the positioning pins during installation will force the frame to deform, destroy the leveled state, and cause secondary inaccuracy of the horizontality.

[0004] Furthermore, the rigid constraint created by the locating pins leads to stress concentration. The locating pins are in line contact with the hole wall, making them prone to fretting wear under vibration conditions, which can create crack initiation points. The connection points are also susceptible to fatigue failure. If ground settlement or load changes cause horizontal misalignment during equipment operation, the locating pins must be removed for releveling, resulting in high maintenance costs and difficulties in secondary leveling.

[0005] Therefore, the aforementioned technical problems need to be solved. Summary of the Invention

[0006] This utility model addresses the above-mentioned technical problems by providing a split frame connection structure that ensures connection rigidity while giving the structure flexibility and adjustability, significantly simplifying the horizontal adjustment process; it also allows for fine-tuning of the connection surface angle, making subsequent maintenance convenient.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A split rack connection structure includes at least two interconnected split racks, namely a first split rack and a second split rack;

[0009] The connecting end of the first split frame is fixedly provided with an outwardly protruding arc-shaped part and at least one threaded hole;

[0010] The connecting end of the second split frame is fixedly provided with a concave arc-shaped part and at least one waist-shaped hole;

[0011] The convex arc-shaped component and the concave arc-shaped component have the same radius of curvature, and they fit together to form an angle-adaptive contact surface.

[0012] It also includes an adjusting support device for adjusting the height of the split frame, which is respectively installed at the bottom of the first split frame and the second split frame;

[0013] The length of the waist-shaped hole extends vertically, and its center is locked to the threaded hole by a connector.

[0014] The split frame connection structure features an arc-shaped interlocking structure. The first split frame has an outwardly convex arc-shaped component, and the second split frame has an inwardly concave arc-shaped component. Both have the same curvature, and when fitted together, they form a rigid contact that can accommodate angular deviations. The waist-shaped hole of the second split frame extends vertically and is connected to the threaded hole of the first split frame through a connector, providing a height adjustment margin. Each split frame has an adjustable support device at its bottom for height adjustment, enabling independent leveling of each split frame.

[0015] In a further optimized design, the central arc angle of the convex and concave arc components is 30° to 120°. The central arc angle is the angle of a circle, corresponding to the unfolding angle of the arc-shaped contact surface, that is, the angle between the line connecting the two ends of the arc-shaped contact surface and the center of the circle, which directly determines the contact area and the degree of freedom compensation capability.

[0016] When there is an angular deviation between the connecting surfaces of the two split frames, the arc-shaped contact surface automatically adapts through local line contact, and the contact point always passes through the center of the circle to avoid additional bending moment; the larger the arc center angle, the smaller the angular deviation that can be compensated.

[0017] A further optimized design incorporates adjustable anchor bolts. The overall height of the split frame can be adjusted using these anchor bolts, and individual adjustments to specific anchor bolts allow for fine-tuning of height deviations. The design is simple and easy to operate.

[0018] The design is further optimized by installing a level on both the first and second split-frames, with the level mounted at the center of the top surface of each frame. Each split-frame has an adjustable support device at its bottom, which, in conjunction with the level, allows for independent leveling of a single frame, making the process very intuitive and convenient.

[0019] In a further optimized design, the length of the oblong hole is 1.5 to 3 times the diameter of the threaded hole. This length of oblong hole ensures sufficient margin for vertical height adjustment between the two split frames; the oblong hole allows for height adjustment, forming a double guarantee with the arc angle tolerance.

[0020] Compared with the prior art, the split frame connection structure of this utility model has the following advantages:

[0021] 1. High-efficiency leveling: The arc-shaped contact surface compensates for the processing error of the split frame, avoiding repeated disassembly and assembly during leveling, resulting in high installation efficiency and speed;

[0022] 2. Enhanced rigidity: The arc-shaped interlocking structure disperses stress, increasing torsional stiffness by more than 40% compared to planar connections;

[0023] 3. Tolerance design: The waist-shaped hole allows for fine height adjustment, forming a double guarantee with the arc-shaped angle tolerance;

[0024] 4. Cost optimization: Eliminating the precision machining process reduces manufacturing costs and facilitates later maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a two-part frame planar connection in the prior art;

[0026] Figure 2 This is a schematic diagram of a specific embodiment of the split frame connection structure of this utility model;

[0027] Figure 3 yes Figure 2 A schematic diagram of the first split frame in the middle;

[0028] Figure 4 yes Figure 3 View from direction A;

[0029] Figure 5 yes Figure 2 A schematic diagram of the second split frame in the middle;

[0030] Figure 6 yes Figure 5 View B.

[0031] In the diagram: 1. First split frame; 2. Second split frame; 3. Outwardly convex arc-shaped part; 4. Threaded hole; 5. Inwardly concave arc-shaped part; 6. Waist-shaped hole; 7. Adjustment support device; 8. Connector; 9. Level; 10. Anti-loosening pad; 11. Arc center angle. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0033] like Figures 1 to 6 As shown, this invention provides a specific embodiment of the split frame connection structure.

[0034] like Figure 2 As shown, the split rack connection structure of this embodiment includes at least two interconnected split racks, namely a first split rack 1 and a second split rack 2.

[0035] like Figure 3 and Figure 4 As shown, the connecting end of the first split frame 1 is fixedly provided with an outwardly protruding arc-shaped part 3 and at least one threaded hole 4; there is one outwardly protruding arc-shaped part 3 on each side, which is vertically arranged; there are three threaded holes on each side, which are vertically arranged.

[0036] like Figure 5 and Figure 6 As shown, the connecting end of the second split frame 2 is fixedly provided with a concave arc-shaped part 5 and at least one waist-shaped hole 6; there is one concave arc-shaped part 5 on each side, which is vertically arranged; there are three waist-shaped holes on each side, which are vertically arranged.

[0037] like Figure 2 As shown, the convex arc-shaped part 3 and the concave arc-shaped part 5 have the same radius of curvature, and the two fit together to form an angle-adaptive contact surface;

[0038] It also includes an adjusting support device 7 for adjusting the height of the split frame, which is respectively installed at the bottom of the first split frame 1 and the second split frame 2;

[0039] The length of the waist-shaped hole extends vertically, and its center is locked to the threaded hole 4 by a connector 8 and an anti-loosening washer 10. The connector 8 is a bolt.

[0040] The split frame connection structure has an arc-shaped interlocking structure. The first split frame 1 is provided with an outwardly convex arc-shaped part 3, and the second split frame 2 is provided with an inwardly concave arc-shaped part 5. The curvatures of the two are the same, and after fitting together, they form a rigid contact that can adapt to angular deviations. The waist-shaped hole 6 of the second split frame 2 extends vertically and is connected to the threaded hole 4 of the first split frame 1 through a connector 8, providing a height adjustment margin. Each split frame is provided with a height adjustment support device 7 at the bottom, realizing independent leveling action of each split frame.

[0041] like Figure 2 As shown, the central angle @ of the convex arc-shaped part 3 and the concave arc-shaped part 5 is 30° to 120°. The central angle @ is the central angle, which corresponds to the unfolding angle of the arc-shaped contact surface, that is, the angle between the two ends of the arc-shaped contact surface and the center of the circle, and directly determines the contact area and the degree of freedom compensation capability.

[0042] When there is an angular deviation between the connecting surfaces of the two split frames, the arc-shaped contact surface automatically adapts through local line contact, and the contact point always passes through the center of the circle to avoid additional bending moment; the larger the arc center angle @, the smaller the angular deviation that can be compensated.

[0043] For general-purpose equipment, an arc center angle of @=60° is recommended to balance adaptive capability and stiffness; for high-precision equipment, an arc center angle of @=45° is selected to compensate for angular deviation of ±1.5°; for heavy-duty equipment, an arc center angle of @=90°~100° is required to improve load-bearing capacity.

[0044] like Figure 2 As shown, the adjusting support device 7 is a height-adjustable anchor bolt. The overall height of the split frame can be adjusted by the anchor bolts, and individual adjustment of the corresponding anchor bolts can also achieve fine adjustment of height deviation. The structure is simple and easy to operate.

[0045] like Figure 2 As shown, a level 9 is installed on both the first split frame 1 and the second split frame 2, with the level 9 positioned at the center of the top surface of the frame. Each split frame has an adjusting support device 7 at its bottom, which, in conjunction with the level 9, allows for independent leveling of a single frame, making the process very intuitive and convenient.

[0046] like Figure 6 As shown, the length of the oblong hole 6 is 1.5 to 3 times the diameter of the threaded hole 4. This length of oblong hole 6 ensures sufficient margin for vertical height adjustment between the two split frames; the oblong hole allows for height adjustment, forming a double guarantee with the arc angle tolerance.

[0047] The connection and adjustment methods for the above-mentioned split frame connection structure are as follows:

[0048] 1) Bring the first split frame 1 and the second split frame 2 close together so that the convex arc-shaped part 3 and the concave arc-shaped part 5 fit together well;

[0049] 2) Adjust the height of the first split frame 1 by adjusting the support device 7, and check the level of the first split frame 1 to a reasonable range by using the level instrument 9;

[0050] 3) Adjust the height of the second split frame 2 by adjusting the support device 7 so that the center of the waist-shaped hole 6 of the second split frame 2 is aligned with the threaded hole 4 of the first split frame 1, and check the level of the second split frame 2 to a reasonable range by using the level instrument 9.

[0051] 4) Bolt 8 and anti-loosening washer 10 pass through the waist-shaped hole 6 of the second split frame 2 and the threaded hole 4 of the first split frame 1 to connect the first split frame 1 and the second split frame 2 together.

[0052] This split-frame connection structure solves the technical problem of difficulty in adjusting the level after the split frame is installed. Through the coordinated operation of the arc interlock, waist-shaped hole and adjustment support device, the level adjustment process is significantly simplified. Unlike existing planar connection or single height adjustment schemes, it allows for fine adjustment of the connection surface angle, giving the structure flexibility and adjustability while ensuring connection rigidity.

[0053] In summary, as described in the specification and figures, this utility model has been manufactured into actual samples and subjected to multiple use tests. The test results demonstrate that this utility model achieves its intended purpose, and its practicality is beyond doubt. The embodiments described above are merely for illustrative purposes and are not intended to limit the scope of this utility model. Any equivalent embodiments made by those with common knowledge in the relevant technical field, utilizing the technical content disclosed in this utility model, without departing from the scope of the technical features and similar features disclosed in this utility model, are all within the protection scope of this utility model.

Claims

1. A split-frame connection structure, characterized in that: It includes at least two interconnected split racks, namely a first split rack (1) and a second split rack (2). The first split frame (1) is fixedly provided with an outwardly protruding arc-shaped part (3) and at least one threaded hole (4) at the connecting end. The connecting end of the second split frame (2) is fixedly provided with a concave arc-shaped part (5) and at least one waist-shaped hole (6); The convex arc-shaped part (3) and the concave arc-shaped part (5) have the same radius of curvature, and they fit together to form an angle-adaptive contact surface; It also includes an adjustment support device (7) for adjusting the height of the split frame, which is respectively installed at the bottom of the first split frame (1) and the second split frame (2); The length of the waist-shaped hole (6) extends vertically, and its center is locked to the threaded hole (4) by a connector (8).

2. The split-frame connection structure according to claim 1, characterized in that, The arc center angle (@) of the convex arc part (3) and the concave arc part (5) is 30° to 120°.

3. The split-frame connection structure according to claim 1 or 2, characterized in that, The adjustable support device (7) is an anchor bolt that can be raised and lowered.

4. The split-frame connection structure according to claim 1, characterized in that, The first split frame (1) and the second split frame (2) are respectively equipped with a level (9), which is installed at the center of the top surface of the frame.

5. The split-frame connection structure according to claim 1, characterized in that, The length of the waist-shaped hole (6) is 1.5 to 3 times the diameter of the threaded hole (4).

Images